linux-kernel - Re: [PATCH] make ipv4 multicast packets only get delivered to sockets that are joined to group

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 14 Sep 2006 00:20:29 +0400
From:	Alexey Kuznetsov <kuznet@....inr.ac.ru>
To:	David Stevens <dlstevens@...ibm.com>
Cc:	Jeff Layton <jlayton@...chiereds.net>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	netdev-owner@...r.kernel.org
Subject: Re: [PATCH] make ipv4 multicast packets only get delivered to sockets	that are joined to group

Hello!

> IPv6 behaves the same way.

Actually, Linux IPv6 filters received multicasts, inet6_mc_check() does
this.

IPv4 does not. I remember that attempts to do this were made in the past
and failed, because some applications, related to multicast routing,
did expect to receive all the multicasts even though they did not join
any multicast addresses. So, it was left intact.

Alexey
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/